#include <stdio.h>

void test()
{
    int i = 17;
    char c = 'c'; /* ascii 值是 99 */
    float sum;

    sum = i + c;
    printf("Value of sum : %f\n", sum);
}
int main()
{
    int sum = 17, count = 5;
    double mean;

    mean = (double)sum / count;
    printf("Value of mean : %f\n", mean);

    int i = 17;
    char c = 'c'; /* ascii 值是 99 */
    int sum2;

    sum2 = i + c;
    printf("Value of sum : %d\n", sum2);

    test();
}